US3086712A - Tilted axis twin disc paint sprayer - Google Patents
Tilted axis twin disc paint sprayer Download PDFInfo
- Publication number
- US3086712A US3086712A US141065A US14106561A US3086712A US 3086712 A US3086712 A US 3086712A US 141065 A US141065 A US 141065A US 14106561 A US14106561 A US 14106561A US 3086712 A US3086712 A US 3086712A
- Authority
- US
- United States
- Prior art keywords
- discs
- paint
- disc
- projected
- articles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003973 paint Substances 0.000 title claims description 39
- 238000010422 painting Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 11
- 239000007921 spray Substances 0.000 description 3
- 238000007592 spray painting technique Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
- B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
- B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
Definitions
- the articles to be painted are mounted on a closed loop conveyor track which first travels past one of the discs, makes a loop and returns past the other disc, the articles usually being rotated as they move along the conveyor track.
- the track and thus the articles being conveyed are grounded while the two rotating discs are charged at high potential.
- Paint is delivered to the under surface of each of the rotating discs and is thrown from the periphery of the rotating discs by centrifugal action and thus atomized.
- the paint leaves the periphery of the discs it is in the form of finely divided particles or droplets which are electrostatically charged at high potential which repel each other and thus are distributed over a wide area about the periphery of the discs and are attracted to the grounded articles.
- the paint particles which are thrown from the area between the two discs repel each other and thus are directed in a diverging spray pattern toward the grounded articles as they pass outside of the discs.
- Such particles will slowly build up in the form of a fuzz on top of the lower disc and eventually centrifugal force will cause the mass to be thrown from the disc with the result that it will be deposited upon the articles being painted in the form of patches or blobs of partially dried paint.
- the present invention obviates the foregoing difiiculty by mounting the two discs for rotation on axes which are inclined outwardly at their lower ends from each other.
- the result is that the peripheries of the discs which face each other are slanted downwardly so that any paint thrown from the periphery of one disc will be projected below the edge of the other disc and thus will not be deposited on the top of the other disc in the form of partially dried paint particles.
- FIG. 1 is a schematic plan view showing the arrangement of the two rotating disc atomizers relative to the conveyer track and the articles being painted;
- FIG. 3 is a view of the usual mounting arrangement for the two rotating discs showing how the paint collects on the lower of the two discs;
- FIG. 4 is a view showing the mounting arrangement for the two discs according to the invention.
- the reference numeral 10 represents the two rotating disc atomizers which are shown mounted on a supporting bar 11.
- the line 12 represents the track upon which the articles 13 are conveyed in a closed path about the rotating discs 10 in the direction of the arrow as shown.
- the discs 10 are connected to a source of high potential 14 which is grounded at 15 in a manner well known in the art.
- the track 12 is grounded at 16, also a well known expedient.
- the articles 13 are conveyed along the track 12 as shown and are usually rotated on a vertical axis as they pass by the rotating disc atomizers 10.
- each of the discs 10 is rotated by a shaft 17 which is rotated at a high speed by means of a motor as shown in FIG. 3.
- the lower end of shaft 17 is rigidly connected to a dish shaped paint distributer 18 which supports the disc 10 by means of an annular grid-like member 19 and an annular member 20 idn such manner as to provide a central opening in each ISC.
- a stationary paint supply tube 21 is provided to deliver paint to the distributer from any suitable source.
- FIG. 3 shows the usual manner of supportnig the discs 10.
- the supporting bar 11 is supported on the lower end of a column 22 which is reciprocated upwardly and ggwnwardly as the discs 10 are rotated by air motors It is desirable that the discs be mounted at exactly the same level but in practice that is impossible with a result that one disc may be slightly above the other.
- the right hand disc 10' is shown slightly lower than the left hand disc.
- paint is delivered at a constant rate through tubes 21.
- centrifugal action causes the paint to flow outwardly through the grid-like member 19 and onto the upper surface of the pan shaped distributer 18 as shown by the small arrows in FIG. 2.
- the paint 1s thrown upwardly against the under surfaces of the discs 10 and moves outwardly along those surfaces and is forcibly thrown from the peripheries of the discs 10 and is atomized by centrifugal action.
- the small arrows of FIG. 2 show the path of movement of the paint.
- the paint as it is discharged from the periphery of the discs 10 would normally form an annular pattern about the discs 10.
- the discs 10 are charged at high potential and the particles of paint leaving the discs 10 will also be charged at high potential.
- the two discs 10 are spaced apart adjacent to each other so that the paint particles between the two discs, being charged at the same potential, will repel each other.
- the articles 13 being at ground potential the paint particles will be attracted to them so that theoretically the combined action should form a fanshaped spray as shown by the dash lines of FIG. 1.
- the small masses 24 of paint will gradually grow larger in size until the centrifugal action of the rotating lower disc will throw them forcibly from the periphery of that disc and the partially dried paint will be deposited on the articles 13 in the form of patches or blobs of partially dried paint.
- FIG. 3 The normal mounting. for the discs 10' is shown by FIG. 3.
- the shafts 1'7 and tubes 21, shown in FIG. 2 extend downwardly through supporting housings 27 rigidly attached to the casing of the motor 23 which is supported from the ends of the supporting bar 11.
- FIG. 1 According to the present invention, as shown by FIG. 1
- the supports 25 are in the form of superposed wedge shaped discs which may be rotated relative to each other to give the housings any inclination desired. It has been found that a 2 inclination is sufficient and that it may be increased to 4 if desired.
- any of the larger paint particles which may be projected from one disc toward the other will be projected below the edges of the respective discs as shown by the dotted lines 26 of FIG. 4.
- An electrostatic painting apparatus comprising, a pair of rotary disc atomizers, means for rotatably supporting said discs on substantially vertical axes in spaced apart relationship to each other at substantially the same vertical level so' that paint projected from each disc will be projected toward the other, means for rotating said discs at-a high speed, means for delivering paint to a surface of each of said discs, and means for charging said discs at a high potential, said supporting meansbeing. formed to support said discs for rotation on axes inclined outwardly at a' small angle relative to each other so that paint projected from the periphery of each disc will be projected below the edge of the other disc.
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL283731D NL283731A (ro) | 1961-09-27 | ||
US141065A US3086712A (en) | 1961-09-27 | 1961-09-27 | Tilted axis twin disc paint sprayer |
GB36269/62A GB1002607A (en) | 1961-09-27 | 1962-09-24 | Improvements relating to electrostatic painting apparatus |
FR910646A FR1334752A (fr) | 1961-09-27 | 1962-09-27 | Perfectionnements aux appareils pour peindre par voie électrostatique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US141065A US3086712A (en) | 1961-09-27 | 1961-09-27 | Tilted axis twin disc paint sprayer |
Publications (1)
Publication Number | Publication Date |
---|---|
US3086712A true US3086712A (en) | 1963-04-23 |
Family
ID=22494012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US141065A Expired - Lifetime US3086712A (en) | 1961-09-27 | 1961-09-27 | Tilted axis twin disc paint sprayer |
Country Status (3)
Country | Link |
---|---|
US (1) | US3086712A (ro) |
GB (1) | GB1002607A (ro) |
NL (1) | NL283731A (ro) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3221992A (en) * | 1962-02-08 | 1965-12-07 | Jr John Sedlacsik | Coating material motive agent atomizer head |
US3288052A (en) * | 1963-08-07 | 1966-11-29 | Hough Richard Murray | Coating apparatus |
US4398672A (en) * | 1980-03-20 | 1983-08-16 | National Research Development Corporation | Electrostatic spraying |
US4489894A (en) * | 1981-02-27 | 1984-12-25 | National Research Development Corporation | Inductively charged spraying apparatus |
EP0139188A2 (de) * | 1983-10-26 | 1985-05-02 | J. Wagner AG | Verfahren und Vorrichtung zum Allseitigen Beschichten von Werkstücken mittels einer elektrostatischen Sprüheinheit |
US4562958A (en) * | 1981-03-05 | 1986-01-07 | Mantis Ulv-Spruehgeraete Gmbh | Method and device for spraying a liquid or a suspension |
US4579279A (en) * | 1983-03-03 | 1986-04-01 | National Research Development Corporation | Electrostatic sprayers |
US4735364A (en) * | 1983-01-06 | 1988-04-05 | National Research Development Corporation | Electrostatic spray head |
US5488898A (en) * | 1993-03-09 | 1996-02-06 | Hough International, Inc. | Spin blender feed coating |
WO2011020602A1 (en) * | 2009-08-20 | 2011-02-24 | Corus Uk Limited | Method for applying a coating on a metal strip, apparatus therefor, and coated strip |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1050071A (fr) * | 1952-01-31 | 1954-01-05 | Kremlin | Perfectionnements apportés aux procédés et appareils pour la projection d'un fluide avec action électrostatique, notamment pour la peinture |
US2883302A (en) * | 1951-11-13 | 1959-04-21 | Ransburg Electro Coating Corp | Electrostatic coating method and apparatus |
US2894485A (en) * | 1958-08-18 | 1959-07-14 | Jr John Sedlacsik | Apparatus for electrostatically applying multi-coatings |
-
0
- NL NL283731D patent/NL283731A/xx unknown
-
1961
- 1961-09-27 US US141065A patent/US3086712A/en not_active Expired - Lifetime
-
1962
- 1962-09-24 GB GB36269/62A patent/GB1002607A/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2883302A (en) * | 1951-11-13 | 1959-04-21 | Ransburg Electro Coating Corp | Electrostatic coating method and apparatus |
FR1050071A (fr) * | 1952-01-31 | 1954-01-05 | Kremlin | Perfectionnements apportés aux procédés et appareils pour la projection d'un fluide avec action électrostatique, notamment pour la peinture |
US2894485A (en) * | 1958-08-18 | 1959-07-14 | Jr John Sedlacsik | Apparatus for electrostatically applying multi-coatings |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3221992A (en) * | 1962-02-08 | 1965-12-07 | Jr John Sedlacsik | Coating material motive agent atomizer head |
US3288052A (en) * | 1963-08-07 | 1966-11-29 | Hough Richard Murray | Coating apparatus |
US4398672A (en) * | 1980-03-20 | 1983-08-16 | National Research Development Corporation | Electrostatic spraying |
US4489894A (en) * | 1981-02-27 | 1984-12-25 | National Research Development Corporation | Inductively charged spraying apparatus |
US4562958A (en) * | 1981-03-05 | 1986-01-07 | Mantis Ulv-Spruehgeraete Gmbh | Method and device for spraying a liquid or a suspension |
US4735364A (en) * | 1983-01-06 | 1988-04-05 | National Research Development Corporation | Electrostatic spray head |
US4579279A (en) * | 1983-03-03 | 1986-04-01 | National Research Development Corporation | Electrostatic sprayers |
EP0139188A2 (de) * | 1983-10-26 | 1985-05-02 | J. Wagner AG | Verfahren und Vorrichtung zum Allseitigen Beschichten von Werkstücken mittels einer elektrostatischen Sprüheinheit |
EP0139188A3 (de) * | 1983-10-26 | 1986-03-26 | J. Wagner AG | Verfahren und Vorrichtung zum Allseitigen Beschichten von Werkstücken mittels einer elektrostatischen Sprüheinheit |
US5488898A (en) * | 1993-03-09 | 1996-02-06 | Hough International, Inc. | Spin blender feed coating |
WO2011020602A1 (en) * | 2009-08-20 | 2011-02-24 | Corus Uk Limited | Method for applying a coating on a metal strip, apparatus therefor, and coated strip |
Also Published As
Publication number | Publication date |
---|---|
NL283731A (ro) | |
GB1002607A (en) | 1965-08-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2754226A (en) | Atomizing and coating system and method | |
US3086712A (en) | Tilted axis twin disc paint sprayer | |
US4116163A (en) | Apparatus to coat a flowing mass of particulate material | |
US3085749A (en) | Electrostatic spray heads | |
US3327948A (en) | Method of electrostatic coating including velocity reduction | |
US3843054A (en) | Powder apparatus | |
WO1985001455A1 (en) | Rotary atomizer spray painting device | |
US4724154A (en) | Electrostatic deposition of coating materials | |
US3121533A (en) | Electrostatic atomizing head | |
JPH07506530A (ja) | 乾燥室における堆積物を最少にする方法および装置 | |
US3011472A (en) | Electrostatic sprayer | |
US3384050A (en) | Electrostatic coating system | |
US2993468A (en) | Apparatus for coating with atomized liquid | |
CA1245440A (en) | Circular spray booth | |
US2975756A (en) | Electrostatic paint spray | |
US4489892A (en) | Apparatus for distributing a substance | |
US2894485A (en) | Apparatus for electrostatically applying multi-coatings | |
US3106492A (en) | Apparatus for coating discrete solids | |
US3017854A (en) | Centrifugal coating apparatus | |
GB830514A (en) | Improvements in or relating to electrostatic spray coating | |
US4158343A (en) | Coater | |
US3067949A (en) | Electrostatic coating apparatus with rotary impeller | |
US3007575A (en) | Screening apparatus | |
US2734479A (en) | norris | |
US3147145A (en) | Electrostatic coating apparatus |